baber/WOPTO huggingface dataset:
Patent GB-863629-A (GB)
Title: Improvements in or relating to thermionic cathodes
Inventor: TURNER FREDERICK THOMAS
IPC: H01J1/28
Filed: 1958-09-29
Abstract: 863,629. Thermionic cathodes. M-O. VALVE CO. Ltd. Sept. 7, 1959 [Sept. 29, 1958], No. 31105/58. Class 39(1). In an indirectly-heated cathode comprising a refractory member at least partially constituted by a porous metal body 1, in the pores of which is dispersed a material at least partially constituted by a barium compound, a heating element 7 is insulated from the refractory member by refractory electrically insulating material 6 at least part of which is in the form of a coating on part of the surface of the refractory member. As shown a porous tungsten tube 1 internally of circular cross-section and externally of square crosssection, is fitted over a molybdenum tube 5 and shrunk thereon in a heating process. The alumina coating 6 is then applied in a solution of acetone and nitro-cellulose and sintered to the sleeve 5. Next, a mixture of two parts of alumina, six parts of barium carbonate and one part of calcium carbonate is heated in a stream of hydrogen to form the corresponding oxides and -the tube 1 is impregnated with this mixture. Finally the tungstep helix 7 is mounted within sleeve 5 and a molybdenum sheet 2 is wrapped around three faces of the tube 1 and secured by means of tabs 4 soldered together at the ends of the emissive face 3. Suitable dimensions and heating temperatures are given.
Patent GB-626668-A (GB)
Title: A method of and oven for drying damp materials such as foundry moulds and cores
IPC: B22C9/12
Filed: 1946-10-21
Abstract: 626,668. Drying apparatus. COLIN & CIE. Oct. 21, 1946. No. 31209. Convention. date, Oct. 23, 1945. [Class 34(ii)] Foundry moulds &c. are dried in a closed heated oven by a continuous circulating current of air which gradually increases in moisture content and temperature until the resulting superheated steam completes the drying. The oven has heat insulated walls 57 and a door 6, and is heated by combustion gases fed through mouth 45. The gases pass through tubes 13- 16, then in the direction of arrows F1 through flat metal radiators 5, 9 and 11 on both sides of the oven, and are finally exhausted through a chimney 4. The oven gases are circulated by a fan 21 through an inlet 22, pipes 24 and 19, heating exchange chamber 46, and through an elongated opening 56 back to the oven. Pressure is relieved, due to expansion of the steam generated, by allowing the gases to operate a valve 2 and escape through a chimney 3.
Patent GB-1222414-A (GB)
Title: Apparatus for use in the production of acetylene
IPC: C07C11/24
Filed: 1968-07-01
Abstract: 1,222,414. Acetylene. BADISCHE ANILIN- & SODA-FABRIK A.G. 1 July, 1968 [7 July, 1967], No. 31244/68. Heading C5E. A gas distributer block, for use in the production of acetylene by the partial oxidation of hydrocarbons with oxygen, has parallel channels through which a mixture of separately preheated hydrocarbon and oxygen can be conducted to the reaction chamber, and an upper part consisting of ceramic material the surface of which facing the entering gas is covered by a non-scaling metal plate having openings registering with the channels in the block. The bottom portion of the block may be made of metal. The metal plate may be 2-20 mm. thick and may be held in position by an annular flange at its periphery. In an example light naphtha preheated to 350‹ C. was mixed with oxygen preheated to 300‹ C. and passed through the gas distributer  block to a flame reaction zone to give an acetylene-containing cracked gas.
Patent GB-1506603-A (GB)
Title: Process for producing ferromagnetic metal powder
IPC: B22F9/24
Filed: 1975-07-25
Abstract: 1506603 Producing ferromagnetic powder FUJI PHOTO FILM CO Ltd 25 July 1975 31298/75 Heading C7D Ferromagnetic metal powder is produced by reacting an aqueous solution of a salt of Fe, Co, Ni or a mixture thereof with a boron hydride compound or derivative thereof as a reducing agent e.g. borane, borazone, borahydrite, sodium borahydride, dimethylaminoborane, diethylaminoborane or hydrozine while maintaining the tem- .perature of the aqueous solution at not more than 20‹C higher than the starting temperature of the reaction. The solution may also contain a salt of a Group 1B, 2B, 3B, 4A, 4B, 5B, 6A, 7A or 8 element, may be subjected to ultrasonic vibration and a magnetic field and the resultant powder may be used as a magnetic recording medium.
Patent GB-620517-A (GB)
Title: Improvements in the burners of oil lamps
IPC: F23D3/00
Filed: 1946-10-22
Abstract: 620,517. Wick burners. VISI CHICK BROODER CO., Ltd., STOUT, E. C., and TINDALL, A. Oct. 22, 1946, No. 31322. [Class 75(i)] In an oil lamp the burner cone and the air deflector are supported over the wick tube D by arms A of small cross sectional area secured to the wick tube D. Four thin metal plates A of substantially triangular form are soldered to the wick tube D and the upper edge of each plate A is stepped and bent to form two horizontal surfaces a<SP>2</SP>, a<SP>3</SP> and a portion a<SP>1</SP> which passes through a recess in the rim of the burner cone and is bent laterally to secure the burner cone to the plates A. The air deflector is secured to the burner cone by means of four metal strips connecting their lower edges and by two metal strips near the top of the burner cone. A cylindrical member D' secured to the bottom of the wick tube D fits into a sleeve F adapted to be inserted into the top of the oil reservoir and provided with a ring of apertures f. The spindle E of a wick adjustor fits tightly into two tubular bearings e<SP>1</SP> in the cylindrical member D<SP>1</SP>. In the Provisional Specification it is stated that the arms A are preferably made from lengths of wire.
Patent GB-1049250-A (GB)
Title: Improvements in or relating to composite abrasive grindstones
IPC: B24D5/16
Filed: 1964-08-04
Abstract: 1,049,250. Grinding. G. NUSSBAUMCHRISTMANN. Aug. 4, 1964 [April 11, 1964], No. 31327/64. Heading B3D. A composite abrasive grindstone comprises a cylinder having segments 4, Figs. 5 and 9, providing the operative surface, each segment, when viewed radially of the grindstone, having a waisted central zone separating two widened end zones whereby adjacent segments interlock with one another and assist each other to withstand tangential forces, the segments being maintained in position by compressing means 14, 15, 16 which act in an axial direction of the grindstone and are secured radially to central framing 17, 18, 19 in the grindstone. The side walls of the segments may consist of straight lines or be curved and the end walls be straight, sinusoidal or have complementary recesses and projections. Each segment may be formed with a pair of passages for receiving the compressing means which consist of rods 14 having nuts 15, 16 at their ends. The rods 14 are braced radially by members 17, 18 anchored to ring portions 19 of the central framing which may be prestressed. The members and portions may be embedded in a concrete mass 21. In another embodiment, the rods 14, Fig. 11, are braced radially by stirrup-shaped members 23 which pass through holes in a cylinder 22 mounted on flanges 26 secured to a shaft 27, nuts 24 acting to pull the members 23 radially inwards. The cylinder 22 may act to support the segments 4. The side walls of the segments may extend around the periphery of the grindstone, as shown in Fig. 5, or at 90 degrees thereto.
Patent GB-660029-A (GB)
Title: Facsimile transmitting means and method of using same
IPC: B41M5/20
Filed: 1948-12-03
Abstract: 660,029. Copying-telegraphy. STANDARD TELEPHONES & CABLES, Ltd. Dec. 3, 1948 [Jan. 31, 1948], No. 31354/48. Class 40 (iii). [Also in Groups VIII and XV] In a facsimile transmitting arrangement comprising a base sheet having at least a conductive surface on which are superposed areas of high resistance, means for scanning the said base sheet by an electrically-conducting stylus and means for transmitting facsimile signals in accordance with the scanning of the high resistance areas of the base sheet, the areas of high resistance are formed on the base sheet by a transfer sheet carrying a transfer substance having a resistance substantially higher than that of the base sheet and selected surface areas of the said substance are transferred to elemental areas of said base sheet to delineate thereon the subject-matter to be transmitted by applying pressure to corresponding areas of the said transfer sheet. The transmitting blank is prepared by using a sheet 41 having a coating 41a of insulating material which is transferred in accordance with the type characters of a typewriter to the surface 21a of a conducting sheet 21 carried by the platen 43. A record of the message to be transmitted is produced on the surface 41 of the blank. In a modification, Fig. 2 (not shown), the message is written and insulating. material transferred by a pointed lead-pencil. The insulating material may be formed of a mixture of beeswax, paraffin and carnauba waxes, mineral oil and zinc sulphide. Other compositions may include greases or solid fats such as stearic acid or stearates and various gums or resins such as shellac, rosin, dammar, congo, kauri or other gums. Other compsi-o tions including diglycol stearate and titanium dioxide or cellulose nitrate, dibutyl phthalate and ethyl acetate are referred to. Transmitting and receiving-circuits. In a combined transmitting and receiving arrangement, Fig. 1, a conductive drum 10, carrying the transmitting sheet 21, is driven from a motor 15 and a stylus carriage 23 is traversed along the length of the cylinder. When stations A, B are respectively transmitting and receiving with the switches 31, 311 in the upper and lower positions, the signals pass to a signal inverter 32, amplifier 34 and through receiver amplifier 38<SP>1</SP> to the stylus member 221 operating on a receiving blank carried by the receiver cylinder 40. The cylinder 10 may be of insulating material with a brush arranged to engage a conducting strip of, or on, the sheet 21. The Specification as open to inspection under Sect. 91 states that the blank may be impregnated with salts carried in solution by a volatile solvent. Alternatively the blank may be impregnated with the appropriate salt and alcohol applied locally in advance of the transmitting stylus. This subject-matter does not appear in the Specification as accepted.
Patent GB-401883-A (GB)
Title: Still
IPC: B01L3/16
Filed: 1932-11-07
Abstract: A glass still for laboratory and other work comprises a slightly bulged bottom, a conical <PICT:0401883/III/1> side wall 1 widening towards the top, and an upwardly inclined shoulder 3 substantially at right angles to the body portion and terminating in a wide neck 2, the bottom, side wall, shoulder, and neck, being interconnected by rounded corners.  Tubular extensions may be provided on the shoulder portions for introducing thermometers.
Patent GB-505781-A (GB)
Title: Improvements in or relating to containers for foods and beverages
IPC: B65D25/14
Filed: 1937-11-16
Abstract: 505,781. Coating-compositions. RAYNOLDH, J. W. Nov. 16, 1937, No. 31536. Convention date, Dec. 18, 1936. [Class 95] A container for food and beverages is provided with a continuous and poreless lining of rubber chloride free of the haze-forming impurities of rubber and in homogeneous union with a minor amount of inert plasticizer to form a continuum in which rubber chloride is the major component, said rubber chloride lining being altered by " petronization " to give increased coherence to the underlying material and to lessen its affinity for volatile solvents. Steel, iron, tinned metal and paper are specified materials of which the container may be made. The rubber chloride, free of haze, is first blended with the plasticizer and with a small amount of a volatile solvent. This single-phase composition is then dipspersed in or. thinned with the remainder of the solvent, preferably a " balanced solvent," a petronizing agent added, and the varnish applied to the container, dried, and cured by heating at about 80‹ C. The varnish may contain any non-hygroscopic pigments or fillers. Specified plasticizers are ethyl and butyl orthobenzoyl benzoates, di-butyl phthalate, di-ethyl phthalate, di-methyl phthalate, di-phenyl phthalate, tri-butyl phosphate, butyl ether of ethylene glycol stearate, methyl ether of ethylene glycol palmitate, ethyl ether of ethylene glycol oleate, and butyl-phthalylbutyl glycollate. Specified petronizing agents are di-phenyl guanidine, di-ortho-tolyl guanidine and tri-phenyl guanidine, and a specified balanced solvent consists of a mixture of p-methyl isopropyl benzene, deeahydronaphthalene, toluol and xylol. Specifications 461,631, 491,015, and 491,075 are referred to.
Patent GB-748273-A (GB)
Title: Improvements in or relating to anti-vibration mountings
IPC: F16F1/38
Filed: 1952-12-15
Abstract: 748,273. Resilient mountings. WRIGHT, H. CLAYTON-. Dec. 2, 1953 [Dec. 15, 1952], No. 31669/52. Class 108 (3). An antivibration mounting comprises an outer cylindrical housing 9, and an inner plug 13 between two abutments 14, 15, on which is disposed a rubber sleeve 29, and a cylindrically - shaped part 20 rigid with the plug 13 and adapted to have direct telescopic engagement with the exterior of the housing 9. As shown, the mounting is intended to be supported from a roof or ceiling. The sleeve 29 is retained in the outer housing 9 by a ring 30 which is a press-fit. There is a clearance between the member 20 and the housing to permit a predetermined degree of relative lateral movement of the members 9, 13. In a modification (Fig. 1), suitable for mounting on a floor, the abutment 30 is integral with the housing 9. An abutment 28 on the housing 9, instead of being integral, as shown, is formed in the modified construction by a ring located in a counterbore in the housing. There is no clearance between the cup 20 and the housing 9.
Patent GB-644457-A (GB)
Title: Improvements in regulators controlled by electron tubes
IPC: G05B11/01
Filed: 1947-12-02
Abstract: 644,457. Automatic temperature - control systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. Dec. 2, 1947, No. 31829. Convention date, Jan. 10, 1947. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 4, 1948.] [Class 38 (iv)] In apparatus for keeping the temperature of an oven constant a safety device is incorporated so that upon an open-circuit or short-circuit in a temperature-sensitive resistance in the oven, the heater is disconnected. As shown in Fig. 2, the temperature-sensitive resistance R6 forms part of a bridge circuit, the output of which is fed to the grid of a valve I and thence to the grid of a valve II, the anode current of which controls a relay K so as to operate a heater E in the oven. The bridge circuit is designed so that no voltage is supplied to the grid of the valve II at the desired temperature, the grid-bias of the valve II, due to resistance R3, being sufficient to cut-off the valve. Should the temperature of the oven fall, the voltage fed to the grid of the valve II causes it to conduct, thus operating relay K. If, however, an open-circuit occurs in the resistance R6 (corresponding to a high temperature) the voltage fed to the valve II will be in the same sense as that due to R3 and the valve will cut off, releasing relay K. The anode supply to the valve I is derived from a gas-filled rectifying valve III which has a gridbias voltage, due to a resistance R7, sufficient to cut-off the valve. An opposing voltage derived across R6 is also fed to the grid via a transformer T. If the resistance R6 becomes short-circuited the opposing voltage is removed so that the valve III is cut-off, no anode voltage then being supplied to the valve I and therefore no voltage to the grid of the valve II, which itself is cut-off again to release the relay K.
Patent GB-462619-A (GB)
Title: Improvements in air cooling arrangements for electric current converters
IPC: H01J13/32
Filed: 1935-11-18
Abstract: 462,619. Metallic vapour rectifiers. SIEMENS - SCHUCKERTWERKE AKT.- GES. Nov. 18, 1935, No. 31891. Convention date, Dec. 19, 1934. [Class 39 (i)] Cooling-air is delivered tangentially and in an upward direction through a conduit 7 to a closed casing 6 of a rectifier 1, particularly a glass mercury vapour rectifier, so that it follows a helical path around the rectifier, and is discharged tangentially at 9. Supplementary air currents may be admitted tangentially through other conduits 10, and in order to maintain the helical path of the cooling- air guide members may be provided on the rectifier or on the casing. The Specification, as open to inspection under Sect. 91, comprises also the following : The helical path of the air may be produced by curved vanes 4, Fig. 1 (Cancelled), fixed in the rectifier casing above a fan 3, and a baffle 5 may be provided at the top of the casing to deflect the air on to the upper part of the rectifier. A fan with blades shaped to produce a helical air flow may be used, or a number of fans may be mounted in inclined positions which may be adjusted in accordance with the conditions of the rectifier to produce a variable air flow. This subject-matter does not appear in the Specification as accepted.
Patent GB-341137-A (GB)
Title: Improvements in or relating to awnings, weather screens, tents, hoods, blinds and the like
IPC: E04H15/00
Filed: 1929-10-21
Abstract: 341,137. Tents and awnings. BUCK, A. G. R., 10, Rusthall Avenue, Bedford Park, London. Oct. 21, 1929, No. 31907. [Class 20 (i).] A tent or awning cover is formed of layers of material connected together so t h a the e intervening air spaces are divided into closed compartments. The cover may be formed in two layers 1, 28, separated by an air space and vertical curtains 25 be used to subdivide the air space into separate compartments. The curtains 25 may fall beneath the ridge lengthwise and beneath the transverse stiffeners 22 for the outer cover, these stiffeners lying within canvas pockets 13 on the outer cover and being secured at their ends to the ridge pole 9 and stanchions 4 respectively. The inner cover may be formed of a number of layers quilted together to comprise separate air pockets and may be secured directly to the outer cover at various parts to enclose air pockets between the layers. The outer cover is provided with a flexible ridge portion formed of a rope 16 enclosed in fibrous material in a cover flap 10, the rope being adapted to embrace thimbles 8 at intervals through which the supporting shackles 15 are passed, by which the flexible ridge is supported from a rigid ridge 16, the inner cover being suspended from the flexible ridge. The air pockets may be filled loosely with air-retaining packing in order that the spaces may be shaped and ensured.
Patent GB-769461-A (GB)
Title: Improvements in and relating to laminated core structures for electric induction apparatus
IPC: H01F38/10
Filed: 1954-11-04
Abstract: 769,461. Transformers. GENERAL ELECTRIC CO. Nov. 4, 1954 [Nov. 12, 1953], No. 31952/54. Class 38 (2). The magnetic core of a transformer suitable for supplying arc discharge devices comprises a loop 2 made of wound grain-orientated magnetic strip, and two open-ended magnetic members 8, 9 disposed on opposite sides of the loop with their ends adjacent to diametrically opposite positions on the respective sides of the loop. Primary and secondary windings 11, 12 carried by the loop are separated by the members 8, 9 which form a magnetic shunt. Shunt air gaps may be formed by insulating spacers 10 between the ends of members 8, 9 and loop 2. The windings 11, 12 may be wound on the closed loop, or slipped on after cutting it at 13. The loop 2 and the members 8, 9 also of wound strip may be held together by bands 15, 14. In a modification a central primary winding may be separated from two secondary windings, one at each end of the loop, by two pairs of shunt core members, Figs. 3, 4 (not shown). In an alternative arrangement, the loop may form the shunt and the two other core members may bear the two windings, connected in autotransformerreactor relationship, Figs. 5, 6 (not shown).
Patent GB-341914-A (GB)
Title: Process of treating aqueous dispersions of bituminous substances
IPC: C08L95/00
Filed: 1929-10-21
Abstract: The addition, to soap dispersions of bitumen, of substances, such as Portland cement, acid pigments, lampblack and asbestos, which normally tend to break the dispersions, is effected by first treating the substances with alkaline reagents such as, for Portland cement, trialkali phosphate, or, for other substances, trialkali phosphate or caustic alkali, to precipitate polyvalent, e.g. calcium, ions, and to adjust the p.H. substantially to that of the dispersions.  For example a floor mix comprises 2 parts by volume of an asphalt dispersion, 1 part of Portland cement treated with trialkali phosphate to precipitate calcium ions, and 2 to 4 parts of fine sand. Specification 319,663, [Class 81 (i), Disinfecting &c.], is referred to.  The Specification as open to inspection under Sect. 91 (3) (a) refers to aqueous dispersions in general and to the treatment of the substances to be added thereto by adjustment of the p.H. substantially to that of the dispersions.  This subject-matter appears in the Specification as accepted only in the restricted form set forth above.ALSO:The addition, to bituminous emulsions, of materials such as Portland cement, acid pigments, lampblack, and asbestos which normally tend to break such emulsions, is effected by first treating the materials with alkaline reagents such as, for Portland cement, trialkali phosphate, and, for other materials, trialkali phosphate or caustic alkali.  For example a floor mix comprises 2 parts by volume of an asphalt-soap emulsion, 1 part of Portland cement treated with trialkali phosphate to precipitate calcium ions, and 2 to 4 parts of fine sand.
Patent GB-1033007-A (GB)
Title: Process for preparing polymers containing oxymethylene groups
IPC: C08G2/00
Filed: 1963-08-13
Abstract: Trioxane is polymerized or copolymerized with not more than 20 mol. per cent of at least one monomer selected from alkylene oxides, cyclic formals, cyclic carbonates, cyclic esters, polybasic acid anhydrides and vinyl compounds, using a catalyst comprising (1) at least one halide of boron, aluminium, iron, tin or antimony and either (2a) at least one non-metal halide capable of affording sulphonium cations or capable of affording phosphonium cations or (2b) at least one oxygen-containing heterocyclic compound or both (2a) and (2b). With components (1) and (2b) at least one of acetyl chloride, trionyl chloride and phosphoric oxychloride is used as activator.  Polymerization is carried out in an inert solvent, in the molten state, or in solid phase, at temperatures in the range 0-100 DEG  C. and at presence ranging from high vacuum to superatmospheric.ALSO:A trioxane polymerization catalyst comprises (1) at least one halide of boron, aluminium, iron, tin or antimony and either (2a) at least one non-metal halide capsule of affording sulphonium cations or capable of affording phosphonium cations or (2b) at least one oxygen-containing heterocyclic compound, on both (2a) and (2b).  Compound (1) may be BF3AlCl3, FeCl3, SnCl4, ShCl5. (2a) may be thionyl chloride, sulfuryl chloride, where sulphonic acid halides, benzene sulfuryl chloride, phosphorous oxychloride, phosphorus trichloride, phosphorus pentachloride, (CH3)4PCl or C6H5 POCl2 (2b) may be an alkylene oxide, styrene oxide, epichlorohydrin, ethylene carbonate or lactone.  (Examples are given).  With components (1) and (2b) these may be used as activator (3) at least one of acetyl chloride, through chloride, phosphorous oxychloride. The catalyst components may be used in proportions equivalent of component (1) to 0.5-20 equivalents of (2a), (2b) or (2a)+(2b) and up to 50 equivalents of components (3) when used.